package com.example.sfm.service;

import com.example.sfm.pojo.vo.ChartDataVO;
import com.example.sfm.pojo.vo.NameValueVO;

import java.util.List;

public interface MetricsService {

    ChartDataVO getActiveTrend(int days);

    List<NameValueVO> getCourseDistribution();

    List<NameValueVO> getGradeDistribution(Integer courseId);

}
